Re: [O] Add ob-sclang.el for sclang Org-mode babel support in contrib/

[Bastien Guerry]

Hi Nicolas,

Nicolas Goaziou <address@hidden> writes:

> Bastien Guerry <address@hidden> writes:
>
>> Still: when it is not used, why adding it?
>
> We are not adding it since it is in the file by default; you removed
> it :)

I guess it is in the file by default because the odds are good that
lexical scoping will be actually used.

> This is an odd question, however. The thing is: how is Emacs-lisp
> scoping, dynamic or lexical? We ought not consider it to be both
> throughout the code base (even though one file still uses dynamic
> scoping) as it is just confusing for developers. Since lexical scoping
> prevents a whole class of (vicious) bugs, it is the most common type of
> scoping among modern languages, by large. As of Emacs 24.1, let's just
> consider Elisp to be lexically scoped.

I agree it's good to have lexical scoping, but I don't consider Elisp
to be lexical scopped -- I consider Elisp to let the user pick up the
constraints he wants, with dynamic binding still being the default.

> In a nutshell, "-*- lexical-binding:t ; -*-" ought to be a mandatory
> cookie in every Elisp file.

Maybe lexical binding will be the default behavior one day, but in the
meantime, I would suggest to use "-*- lexical-binding:t ; -*-" only if
lexical binding is actually used in the file.

Best,

-- 
 Bastien